Last updated: July 2, 2025
In Chengshan, China, awareness of the UV Index is crucial for safeguarding your skin health and preventing sunburn. Understanding UV levels helps residents and visitors alike to take necessary precautions against harmful sun exposure, particularly during peak hours when the index reaches its highest levels—peaking at 12 around noon. With Chengshan's Cwa climate, characterized by warm summers and significant UV radiation, knowing how to manage your sun exposure can protect you from potential skin damage. So whether you're enjoying outdoor activities or simply soaking up the sun, keep an eye on the UV Index and stay protected!
From the early morning hours, the UV Index increased steadily, starting at 2 at 7:00 AM and peaking at an intense 12 by noon. The sun reached its highest intensity around 11:00 AM, with a UV Index of 11, prompting caution for outdoor activities. As the afternoon unfolded, the UV levels began to decline, dropping to 10 at 1:00 PM, then tapering off to 5 by 3:00 PM. By the time evening set in, the index fell further, reaching 1 by 6:00 PM and fading into 1 at 7:00 PM. This hourly progression underscores the importance of sun safety during the midday hours when UV exposure is at its peak.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 2 | low | 45 min |
08:00 | 4 | moderate | 30 min |
09:00 | 7 | high | 25 min |
10:00 | 9 | very high | 15 min |
11:00 | 11 | extreme | 10 min |
12:00 | 12 | extreme | 10 min |
13:00 | 10 | very high | 15 min |
14:00 | 8 | very high | 15 min |
15:00 | 5 | moderate | 30 min |
16:00 | 3 | moderate | 30 min |
17:00 | 2 | low | 45 min |
18:00 | 1 | low | 45 min |
19:00 | 1 | low | 45 min |
Throughout the year, the UV Index shows significant fluctuations, with the highest values occurring during the summer months. From January to February, exposure levels remain moderate (UV Index 3-4), allowing for a burn time of 30 minutes. As we move into March and April, the index rises sharply, reaching high (6) and very high (8) levels, with burn times decreasing to 25 and just 15 minutes, respectively. The months of May through August pose the highest risk, with UV Index readings peaking at 11 and 12 during July and August, where even short exposures can lead to sunburn (10 minutes burn time). After this peak, the index gradually decreases in September (9) and October (7), yet still demands caution with burn times of 15 and 25 minutes. As winter arrives, November and December see a return to moderate levels, albeit with a sustained emphasis on protective measures. Visitors and residents should remain vigilant during the high-risk months of May through August, adopting sun safety protocols like wearing sunscreen, protective clothing, and seeking shade during peak hours.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Beijing UVI | 2 | 3 | 5 | 8 | 9 | 9 | 10 | 9 | 7 | 6 | 4 | 2 |
Chengshan | 3 | 4 | 6 | 8 | 9 | 10 | 11 | 12 | 9 | 7 | 4 | 3 |
Chengdu UVI | 5 | 6 | 8 | 10 | 12 | 11 | 11 | 10 | 11 | 8 | 6 | 4 |
Shanghai UVI | 5 | 6 | 8 | 10 | 10 | 11 | 12 | 11 | 11 | 8 | 6 | 4 |
Guangzhou UVI | 7 | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 11 | 10 | 9 | 7 |
Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |